This seems powerful…

How about if we combine her with these:

[deck]
[creatures]
4 Hapatra, Vizier of Poisons
4 Archfiend of Ifnir
4 Soul-Scar Mage
4 Weaver of Lightning
[/creatures]
[spells]
4 Incendiary Flow
4 Grapple with the Past
2 Savage Alliance
4 Magma Spray
2 Collective Defiance
2 Tormenting Voice
[/spells]
[lands]
4 Sheltered Thicket
4 Canyon Slough
4 Hissing Quagmire
4 Blooming Marsh
4 Foreboding Ruins
3 Game Trail
2 Swamp
1 Forest
[/lands]
[/deck]

This is probably too slow, because of how the manabase has been setup… Feels more like a kitchen table deck than anything else.

[card]Boiling Earth[/card] might be a nice sideboard option.